91050 divided by 91 
The aim is to understand the frequency of 91 in 91050.

Going ahead to step 1:
If we divide 9 by 91, we get 0 and a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 91

Moving on to step 2:
91 can be fit into 91 1 times, resulting in a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 91 from 91, we get 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 91

Moving on to step 3:
91 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we subtract 0 from 0, we get 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 91

Advancing to step 4:
When dividing 5 by 91, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 100.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 91

Let's proceed to step 5:
91 can be fit into 50 0 times, resulting in a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 1000.0
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 6:
91 goes into 500 5 times with a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 1000.5
If we subtract 455 from 500, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 7:
450 divided by 91 is 4 with a remainder of 86.
Record the quotient 4 as the next digit in the result. 
Result so far: 1000.54
Deduct 364 from 450 and we're left with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Advancing to step 8:
When dividing 860 by 91, we get 9 with a remainder of 41.
Put 9 as the next digit of the answer. 
Result so far: 1000.549
Deduct 819 from 860 and we're left with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Let's proceed to step 9:
91 goes into 410 4 times with a remainder of 46.
The number 4 becomes the next digit in our result. 
Result so far: 1000.5494
Subtract 364 from 410 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 10:
460 divided by 91 is 5 with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 1000.54945
If we subtract 455 from 460, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 11:
91 goes into 50 0 times with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 1000.54945
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 12:
91 goes into 500 5 times with a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 1000.5494505
The remainder is 45 after subtracting 455 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 13:
If we divide 450 by 91, we get 4 and a remainder of 86.
Put 4 as the next digit of the answer. 
Result so far: 1000.54945054
If we take 364 away from 450, we end up with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

The final result is 1000.54945054 with a remainder of 8.6e-08.